January weather forecastSt. John's, Canada

Weather in January

The weather in January in St. John's heralds the onset of deep winter, showcasing landscapes transformed by thick snowfall. Notably, it is the coldest month of the year, evidenced by an average low of -8.2°C (17.2°F) and a high of -0.8°C (30.6°F). From heavy snowfall glaring under less daylight to temperatures dipping to freezing points, the city witnesses a traditional winter season. This time also calls for the proficient use of winter-special accessories. The city remains significantly shrouded in clouds, providing minimum sunshine.

Temperature

St. John's's average high-temperature marks a freezing cold -0.8°C (30.6°F) with the advent of January, closely mirroring that of the preceding month. The average nighttime temperature in St. John's lowers to a still subzero cold -8.2°C (17.2°F) throughout January.

Rainfall

In St. John's, during January, the rain falls for 9.3 days and regularly aggregates up to 66mm (2.6") of precipitation. Throughout the year, in St. John's, Canada, there are 162.7 rainfall days, and 1207mm (47.52") of precipitation is accumulated.

Snowfall

January through June, October through December are months with snowfall in St. John's. January is the month with the most snowfall in St. John's. Snow falls for 18.3 days and accumulates 887mm (34.92") of snow.

Sea temperature

In St. John's, Canada, the average seawater temperature in January is 0.9°C (33.6°F).
Note: Regarding swimming, this is extremely cold, hazardous, and can lead to death. Hypothermia sets in rapidly without the protection of insulating waterproof gear.

Daylight

In January, the average length of the day in St. John's, Canada, is 8h and 58min.
On the first day of the month, sunrise is at 7:48 am and sunset at 4:19 pm. On the last day of January, in St. John's, sunrise is at 7:28 am and sunset at 4:59 pm NST.

Sunshine

In St. John's, the average sunshine in January is 2.1h.

UV index

The months with the lowest UV index in St. John's, Canada, are January, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 1 in January translates into these instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Around midday, solar radiation is most harmful; hence, exposure should be limited. During bright days, sunglasses that offer UVA and UVB defense are recommended. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.